Note - Blast analyses are based on comparisons of the phosphosites and the bordering four amino acids on each side of these phosphosites.

Phosphosite
Human Protein:	XKR4
Human P-Site:	S554
P-Site Sequence:	RSISNNRSVVSDRDQ
UniProt:	Q5GH76
Intern. Prot. ID:

Protein Phosphosite Match	Human Protein Short Name	Human UniProt. ID	Phosphosite Number	Sequence	% Identity / # AA	Target Size kDa
Phosphosite 0:	XKR4	Q5GH76	S554	RSISNNRSVVSDRDQ	100 / 9 AA	72
Phosphosite 1:	NDST2	P52849	S402	PHLFHNRSVLADQMR	62 / 8 AA	101
Phosphosite 2:	VAX1	Q5SQQ9	S167	GKDSELRSVVSETAA	66 / 9 AA	35
Phosphosite 3:	USP34	Q70CQ2	S916	ENLGNNRSVVISLRL	85 / 7 AA	404
Phosphosite 4:	USP33	Q8TEY7	S473	KQHKKYRSVISDIFD	62 / 8 AA	107
Phosphosite 5:	XKR4	Q5GH76	S557	SNNRSVVSDRDQKFA	100 / 6 AA	72
Phosphosite 6:	SYNM	O15061	S1540	QRMVDQRSVISDEKK	62 / 8 AA	173
Phosphosite 7:	USP20	Q9Y2K6	S443	RKEQRYRSVISDIFD	71 / 7 AA	102
Phosphosite 8:	NHSL1	Q5SYE7	S306	SGSSGNMSVLSDSAG	66 / 9 AA	171
Phosphosite 9:	VAX1	Q5SQQ9	S170	SELRSVVSETAATCS	83 / 6 AA	35
Phosphosite 10:	SYNM	O15061	S1543	VDQRSVISDEKKVAL	83 / 6 AA	173
Phosphosite 11:	Putative uncharacterized protein ENSP00000347057	A6NHS1	S51	SSLPDTRSVASDDSL	55 / 9 AA	10
Phosphosite 12:	RLTPR	Q6F5E8	S641	RVNSRLRSVVWDRNH	66 / 9 AA	159
Phosphosite 13:	HSPA1L	P34931	S553	SYAFNMKSVVSDEGL	75 / 8 AA	70
Phosphosite 14:	SDK1	Q7Z5N4	S303	VVPPGNRSVVAGSSE	55 / 9 AA	242
Phosphosite 15:	KCNC2	Q96PR1	S538	RLLEHNRSVLSGDDS	62 / 8 AA	70
Phosphosite 16:	GBA2	Q9HCG7	S748	SSRPQSRSVMSDQCA	55 / 9 AA	105
Phosphosite 17:	PHLPP	O60346	S345	RAPRPVVSDTESFSL	83 / 6 AA	185
Phosphosite 18:	USP34	Q70CQ2	S352	NDVCNNESLVSDTET	66 / 9 AA	404
Phosphosite 19:	SLK	Q9H2G2	S655	TEEMEVRSVVADTDQ	83 / 6 AA	143
Phosphosite 20:	TINAGL1	Q9GZM7	S289	LRRRGVVSDHCYPFS	83 / 6 AA	52